A Watershed in My Hand

That is living in the water? Groups of two to three view pond water with microscopes in order to find microorganisms. They draw pictures of the ones they find in their slides.  The groups compare their drawings to pictures of common pond...

My friend told me how electricity is measured and I was like Watt! In the hands-on activity, learners explore electricity by building circuits, both parallel and series. They also determine how increasing the number of light bulbs and...

Young scientists inductively derive Ohm's Law of voltage, resistance, and current by creating series and parallel circuits with 9-volt batteries and light bulbs. A week's worth of experiments, observation, and hands-on activities are...

Learners build a model of an estuary. In this wetland lesson, students build a model estuary with a paint tray and modeling clay. They use the model to illustrate the impact of non-point pollution on the watershed.

A baseball player with a vision of 20/7.5 can clearly see an object 20 feet away that normal folks could only see clearly at 7.5 feet away. This fact along with other interesting examples are explored in a video that explains how senses...

Ever wonder why oil and water don't mix? Or why washing butter off of your hands is difficult? A video explores the different types of molecules, reviews charge and geometric asymmetry, and covers why water is one of the best molecular...

Flashy animation, superb narrative, and a touch of bad-hair-day humor explain the nature of chiral molecules in this five-minute feature. Viewers find out how chemist Jacobus Van't Hoff proposed that some saturated carbon molecules are...

Students examine the relationship between chlorophyll and carbon dioxide in the atmosphere.  In this investigative lesson students study the local effects of climate change. 

Young scholars conduct hands-on fieldwork in order to investigate water quality of a nearby stream. They discuss watersheds and how it affects water quality as well as identify any causes of changes or pollution in the area water before...

Students explore the seasonal changes in Costa Rica.  In this dry season lesson students use the Internet to locate science data then generate data for precipitation.